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🌎  Greenwich, United Kingdom [change]

δ Trianguli Australis (delta Trianguli Australis)

δ Trianguli Australis is a double supergiant star in the constellation of Triangulum Australe.

δ Trianguli Australis visual magnitude is 3.85. Because of its moderate brightness, δ Trianguli Australis should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about δ Trianguli Australis:

3.85
Supergiant
δ Trianguli Australis (delta Trianguli Australis) is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of δ Trianguli Australis

δ Trianguli Australis is situated south of the celestial equator, as such, it is more easily visible from the southern emisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of δ Trianguli Australis are provided in the following table:

16h 15m 26s
-63° 41’ 08”
323.36°
-9.23°
Triangulum Australe

The simplified sky map below shows the position of δ Trianguli Australis in the sky:

Finder chart δ Trianguli Australis (delta Trianguli Australis) star
Simplified finder chart for δ Trianguli Australis (delta Trianguli Australis).

Visibility of δ Trianguli Australis from your location

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

δ Trianguli Australis (delta Trianguli Australis) is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of δ Trianguli Australis

The image below is a photograph of δ Trianguli Australis from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of δ Trianguli Australis is 0.002 arcsec per year in Right Ascension and -0.011 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of δ Trianguli Australis (delta Trianguli Australis) star
DSS2 image of δ Trianguli Australis. The red arrow shows the motion of δ Trianguli Australis during the next 10000 years (0.33 arcmin in Right Ascension and -1.83 arcmin in declination);

Distance of δ Trianguli Australis from the Sun and relative movement

δ Trianguli Australis is distant 620.95 light years from the Sun and it is moving towards the Sun at the speed of 5 kilometers per second.

190.48 pc
620.95 ly
-5 km/s
0.002 arcsec/year
-0.011 arcsec/year

Spectral properties of δ Trianguli Australis

δ Trianguli Australis belongs to spectral class G2 and has a luminosity class of I corresponding to a supergiant star.

-2.55
G2I
4493K

The red dot in the diagram below shows where δ Trianguli Australis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of δ Trianguli Australis. Attribution: Richard Powell / CC BY-SA

δ Trianguli Australis star system properties

δ Trianguli Australis is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the δ Trianguli Australis double sysyem:

3.85
11.85
8
30 arcsec

Alternative designations of δ Trianguli Australis

δ Trianguli Australis
(delta Trianguli Australis)
SAO253474
SAO253474